Equity Based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Summary of stock option awards granted, Activity

The following table summarizes the activity related to the Company’s time-vested stock option awards granted under the 2022 Plan for the year ended December 31, 2023:

	Number of Shares			Weighted Average Exercise Price
Time-vested options outstanding at January 1, 2023		5,865,108		$	10.30
Granted		12,487,143			7.09
Forfeited		(3,672,142	)		9.27
Time-vested options outstanding at December 31, 2023		14,680,109		$	7.83
Time-vested options exercisable at December 31, 2023		2,486,766		$	9.75
Weighted average remaining contractual life	7.5 years
Time-vested options vested and expected to vest at December 31, 2023		14,680,109		$	7.83
Weighted average remaining contractual life	8.6 years

Summary of Profits Interest awards, Activity

The following table summarizes the activity related to the Company’s Profits Interest awards for the year ended December 31, 2023:

	Number of Shares			Weighted Average Grant Date Fair Value
Unvested awards outstanding at January 1, 2023		8,369,795		$	7.08
Vested		(2,266,101	)		6.47
Forfeited		(2,537,941	)		7.45
Unvested awards outstanding at December 31, 2023		3,565,753		$	7.23

Summary of assumptions of the valuation scenarios

The following reflects the key assumptions used in each of the valuation scenarios:

	OPM			PWERM
Total equity value (in thousands)	$234,551 - $280,400			$	1,750,000
Expected volatility of total equity		95	%	60% - 90%
Discount for lack of market		30	%	7% - 15%
Expected time to exit event	3.4 years - 3.7 years			0.1 years - 0.5 years

Schedule of Compensation expense related to share-based awards

Compensation expense related to share-based awards is included in research and development and general and administrative expense as follows (in thousands):

	Years Ended December 31,
	2023		2022		2021
Research and development	$	15,864	$	23,711	$	–
General and administrative		14,982		50,758		699
Total equity-based compensation expense	$	30,846	$	74,469	$	699

Market-Vested Awards

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Summary of assumptions of the valuation in stock option activity

Due to the market condition included in this grant, the Company used the Geometric Brownian Motion/Monte Carlo model to value these awards. The model used the following inputs:

Expected volatility	96%
Suboptimal exercise multiple	2.80
Risk-free interest rate	4.2%
Expected dividend yield	0.0%

Time-Vested Awards

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Summary of assumptions of the valuation in stock option activity

The fair value of stock options granted was estimated using the following assumptions during the years ended December 31, 2023 and 2022:

	Years Ended December 31,
	2023	2022
Expected volatility	81.5% - 84.0%	82.0% - 85.0%
Expected life of options, in years	5.2 - 6.1	5.9 - 6.1
Risk-free interest rate	3.5% - 4.7%	3.7% - 4.4%
Expected dividend yield	0.0%	0.0%